baber/WOPTO huggingface dataset:
Patent GB-1417588-A (GB)
Title: Radio-frequency receivers
IPC: H03L7/20
Filed: 1972-12-14
Abstract: 1417588 Channel selector circuits INTERNATIONAL STANDARD ELECTRIC CORP 14 Dec 1972 [22 Dec 1971] 57687/72 Heading H3Q In a receiver having a channel selector 6 and a tuning oscillator 3 variable by a tuning signal Ut, a mixer 13 receives the oscillator signal fo and integral multiples f<SP>1</SP>n of the channel separation frequency generated by an auxiliary oscillator 11 tuned to the channel separation frequency and a harmonic generator 12 and a filter 14, and a frequency discriminator 8 provide a signal to modify the tuning signal. On selection of a channel by the selector 6 a control means including a filter 15 and counting and comparison means 7 causes sweeping of the tuning signal Ut and in response to a digital control signal, derived through a filter 15 and counting and comparison means 7 from the output of the mixer 3, indicative that the receiver tuning is closed to the selected channel then halts the sweep of the tuning and establishes an automatic frequency control loop in which the tuning signal is modified to maintain the receiver tuned to the selected channel until another channel is selected. In the TV receiver shown a channel is selected by a preselector switch 6 such as push-button keys and on pressing a start button 9 associated with logic circuits 7 operate to start a saw-tooth generator 10 which produces the varying tuning signal Ut for the electronically tuned oscillator 3. A crystal oscillator 11 feeds a spectrum generator 12 which produces a harmonic spectrum output f<SP>1</SP>n of the channel separation frequency fd which is fed to the mixer 13. When a predetermined I.F. is obtained at the output of a mixer 13 it is fed to a LPF 15 the output of which is rectified and converted into pulses 16 by a Schmitt trigger circuit. The pulses 16 are fed to a counter 17 and when the count corresponding to the channel selected by 6 is reached the logic circuits 7 operate to stop the sweep of the sawtooth generator 10 and to connect the output of the discriminator 8 via a controlled switch 18 and an adder 19 to modify the tuning voltage Ut applied to the oscillator 3. The AFC loop 8, 18, 19, 3, 13, 14 now maintains the receiver tuned to the selected channel until another channel is selected by operating the button associated with 9. To change the channel separation frequency the auxiliary I.F. fz2 is changed by retuning the discriminator and filters such as by switching and varactor diodes actuated from the logic 7. The channel selected may be digitally indicated at 20 by digital indicating tubes or light emitting diodes. The receiver also includes an R.F. stage 1, a mixer 2 and an I.F. amplifier and demodulator 4.
Patent GB-1199980-A (GB)
Title: Improvements in or relating to Bonded Refractories
IPC: C04B35/01
Filed: 1967-12-20
Abstract: 1,199,980. Chrome ore refractories. KAISER ALUMINIUM & CHEMICAL CORP. 20 Dec., 1967 [9 Feb., 1967], No. 57819/67. Heading C1J. Refractories comprise chemically bonded chrome ore of particle size 20-30 wt. per cent - 325 mesh (Tyler), 20-40% - 100 mesh, 15- 35% - 28 mesh + 100 mesh and the balance + 28 mesh, the refractory being free from MgO other than that contained in the ore. The chemical bonding agent may be lignin sulphonate. The refractory may also contain 0À5- 2% amorphous silica.
Patent GB-1430210-A (GB)
Title: Sound reproducing apparatus
IPC: H04S3/00
Filed: 1973-12-13
Abstract: 1430210 Quadrophonic switching circuits SONY CORP 13 Dec 1973 [29 Dec 1972] 57823/73 Heading H4R A multi-track tape recorder is switchable to record 4- or 2-channel inputs and to play-back the recordings through four sound reproducers directly or via a 2-4 decoder. As shown, four discrete inputs 38-41 or two matrixed inputs 34, 35 are switched, SA, to all four or two elements, respectively, of a fourtrack head. The recorded tracks are switched, SB, SC, either directly or via decoder 43 to loud-speakers 49-52. In a modification (Fig. 2 not shown) normal stereophonic signals from a radio (75), gramophone (59) or input terminals (33) may be recorded on a two-track stereophonic tape recorder (64) and/or monitored through a decoder (43) which may simply pass the unmodified signals to two of four loud-speakers (68- 74) or generate rear channel information for additional reproduction. Matrixed signals from the same inputs or 4-channel discrete signals from input terminals (37-41) are recorded on two or four tracks, respectively, of a multitrack recorder 11 and/or monitored through the decoder and loud-speakers as appropriate.
Patent GB-1276779-A (GB)
Title: Brake assembly for rail track
IPC: B61K7/00
Filed: 1970-12-04
Abstract: 1276779 Non-frictional track brakes AUGUST THYSSEN-HUTTE AG 4 Dec 1970 [24 Dec 1969] 57853/70 Heading F2E A brake assembly for braking wheeled vehicles travelling on a rail track comprises a rubber rail 1 located parallel and close to the track and resting on a longitudinal rigid steel support 3 wherein one longitudinal side of the support 3 has fixed thereon a claw-like member 4 which engages with lateral clearance over a projection 5 of the base 2 of the rail 1 and the opposite longitudinal side of the support 3 is provided with a retaining element which may be in the form of a strip 7. The strip 7 is releaseably connected to the support 3 by means of screwbolts 8 which project through recesses in a second projection 9 at the base 2 of the rubber rail 1 and annular bearing spacers 11 serve to space the strip 7 from the support 3. The member 4 which is the form of an angle iron welded to the support 3 and the strip 7 and spacers 11 allow of transverse expansion of the rail 1 during braking and an optimum utilization of the available rubber volume is obtained for the braking effect. The screwbolts 8 prevent longitudinal movement of the rail 1 relative to the support 3 but by unscrewing the bolts 8 the rubber rail 1 may be replaced. In place of the strip 7 and spacers 11, an angle iron may be provided having a recess into which the projection 9 is fitted.
Patent GB-1155723-A (GB)
Title: Method of Making Semiconductor Structure
Inventor: GODEJAHN GORDON CHARLES
IPC: H01L21/762
Filed: 1966-06-20
Abstract: 1,155,723. Semi-conductor devices. NORTH AMERICAN ROCKWELL CORP. 20 June, 1966, No. 59788/68. Heading H1K. The subject-matter of this Specification is included in Specification 1,155,722, but the claims relate to a process for joining semiconductor segments derived from two wafers of opposite conductivity types in a monolithic structure. One process involves producing a pattern of holes and a corresponding pattern of mesas in wafers respectively of opposite conductivity types, joining the wafers by engaging the mesas in the holes and depositing crystalline insulating material around the mesas, removing part of the mesad wafer to expose the insulating material and isolate the mesas and, as a separate operation, isolating segments of the apertured wafer by forming isolating channels, filling them with isolating material and then removing material from the face opposite the channels down to the isolating material therein. In an alternative process PN junctions or P + or N +  diffused zones are formed in the wafers prior to joining.
Patent GB-1298289-A (GB)
Title: Production of anhydrous sodium metasilicate in a fluidized bed
IPC: C01B33/32
Filed: 1970-12-18
Abstract: 1298289 Anhydrous sodium metasilicate STAUFFER CHEMICAL CO 18 Dec 1970 [7 Jan 1970 13 April 1970] 60190/70 Heading C1A Uniform spherical anhydrous (up to 3% water) sodium metasilicate particles having high attrition resistance and minimum dust content are produced by (a) contacting anhydrous sodium metasilicate particles in a fluidization zone with an upwardly flowing stream of heated air to maintain the particles in a dense fluidized bed, and (b) contacting the particles in the bed with an aqueous sodium metasilicate liquor to produce crystallized anhydrous sodium metasilicate. As shown in the drawing, aqueous sodium metasilicate solution is fed from zone 10 through valve 14 to distribution means 16 for introduction into fluid bed 20 of anhydrous sodium metasilicate particles fluidized by heated air flowing upwardly through the bed fromair heating zone 30. Fluidization air and entrained particulate material is withdrawn overhead through cyclone 38 wherein the particulate material is separated and returned to zone 23. The air is passed to water scrubbing zone 46 and recycled through compressor 54 to heating zone 30. The scrubbing operation enables the CO 2  concentration in the circulating air to be maintained at <50 p.p.m. Particulate product material is discharged to screening zone 60, oversized material being reduced in size in milling zone 64 and combined with fines from zone 60 for reintroduction to fluidization zone 20.
Patent GB-1247279-A (GB)
Title: Improvements in or relating to centrifugal straining apparatus
Inventor: GRIESELHUBER WILLIAM
IPC: B04B7/04
Filed: 1969-12-10
Abstract: 1,247,279. Centrifugal strainer. WESTERN STATES MACHINE CO. 10 Dec., 1969, No. 60281/69. Heading BID. In a centrifugal strainer for sugar slurry, the solid fraction of which is thrown radially outwards from the lip 12 of the rotary basket, caking is avoided by providing a downwardly sloping frusto-conical partition 30, lined with polytetrafluoroethylene, on to which the sugar is thrown, a set of circumferentially spaced scrapers 52, 53 engaging the partition 30, and either the partition or the scrapers rotating slowly about the same axis as the basket. In Fig. 2, partition 30 is encircled by a roller chain 47 engaging a drive pinion 45. The scraper unit comprises flexible blades 52 on an arm 53 which is adjustable by locking device 55 .. 58 to compensate for blade wear, adjustment being made to head 59 outside the casing. Blades 52 may be replaced by wires or brushes. The sugar crystals strike partition 30 which deflects them downwards, the scrapers removing any sugar tending to stick to the partition.
Patent GB-1245490-A (GB)
Title: Fluorescent lamp cathode
Inventor: BETTS MAZEPPA DON
IPC: H01J61/067
Filed: 1969-12-18
Abstract: 1,245,490. Fluorescent discharge lamps. G.T.E. SYLVANIA Inc. 18 Dec., 1969 [20 Dec., 1968], No. 61772/69. Heading H1D. A fluorescent lamp comprises a cathode 2 in the form of a coated non-inductively wound coiled coil filament 5 mounted at each end of an envelope 6. The filament may be wound as a reverse helix by engaging the mid-point of a straight length of coiled wire in a diametral slot at one end of a cylindrical mandrel which is rotated and moved axially. Alternatively the filament may be a triple coil e.g. a 0À5 mil. W wire is wound on parallel mandrel wires of 8À0 mil. No and 4À2 mil. W, and the resulting coil wound on a 9À0 mil. Mo mandrel wire to form a secondary coil which is then wound as described above into a reverse helix which is sintered at 1670‹ C. and then immersed in acid to dissolve the Mo mandrel wires. The legs 1 which may extend as shown at right angles to the axis of the coil or may alternatively extend parallel thereto, are then welded to support wires 3 of a mount 4 forming a suitable holder when immersing the filament in a coating suspension. After the coating has dried the mount 4 is sealed to the end of envelope 6.
Patent GB-728776-A (GB)
Abstract: 728,776. Regulating air supply for combustion. EAST SUSSEX ENGINEERING CO., Ltd. and BURCHELL, E. E. Jan. 11, 1954 [Dec. 1, 1952], No. 30449/52. Class 126. A control for an air regulating flap mounted on a removable ashpit door closing an opening in a fireplace front is mounted on the fireplace front at one end, and is brought into operative relation with the flap by replacing the ashpit door in the front. An ashpit door. 16 is held in place by hooks 17 engaging lugs on the fire front. An air control flap 20 closing an air inlet opening in the ash pit door is mounted on trunnions 21 cooperating with bearings formed .in brackets 22 integral with the hooks 17. A triangular projection 23 formed at one end of the flap 20 carries a lug 24 with a rounded under surface which cooperates with a cam 30 mounted on a spindle 25. The spindle 25 is held against unwanted rotation in its bearings by a spring washer. The cam 30 has two spiral lift portions with a step 33 between adjacent low points and a projecting ear 34 between the high points. Clockwise rotation of the cam 30 causes one spiral part to engage the upper surface of the lug 24 and hold the flap 20 closed, Fig. 3. Anticlockwise rotation from this position causes the step 33 to engage the underside of the lug 24 and lift the flap 20 rearwardly. In the fully open position, the underside of the lug 24 engages the projection 34, Fig. 4. The cam 30 is designed so that the thrust on the spindle 25 is substantially radial when the flap 20 is lifted, so that the flap 20 is stably supported.
Patent GB-2000595-A (GB)
Title: Arrangement for measuring oxygen concentrations
IPC: G01N27/416
Filed: 1978-07-03
Abstract: An arrangement for measuring oxygen concentrations consists of a noble metal reduction electrode 2 surrounded by a annular reference electrode 3, the two electrodes being enclosed from the surrounding environment by polytetrafluoroethylene membrane 6. In order to prevent contamination of the electrode 2, said electrode is covered by a membrane containing a sodium selective cation ligand 20 and the reference electrode 3 is preferably also covered by a membrane 30 containing a different ligand from that contained in the membrane 20. Electrolyte 5 contains the membrane ligand cation(s). <IMAGE>
Patent GB-2032773-A (GB)
Title: Fire control method and system
IPC: A62C3/00
Filed: 1978-09-29
Abstract: The invention relates to a method of fire control, comprising the steps of supplying a nozzle which normally distributes ventilation air in a space to be ventilated by induction of an air jet into the space, supplying a source of flowable fire dampening and/or extinguishing medium, the nozzle and source being connected by a normally closed path, detecting a temperature rise, opening the closed path and passing the fire dampening and/or extinguishing medium along the path to the nozzle and distributing it to hinder or prevent fire. Preferably Halon may be used as the fire control medium.
Patent GB-2009079-A (GB)
Title: Apparatus for Closing Knock- Down Cartons
IPC: B31B5/74
Filed: 1978-10-10
Abstract: Cartons of the leakproof type comprising a rectangular sleeve each end of which is formed with crease lines to present four closure wall portions 3, 4, two of said portions 3 being further provided with crease lines 5 defining triangular portions to provide gussets, are closed by apparatus comprising means 21 for holding a carton in position for closure, a pair of angularly movable pressure plates, such as plate 27, adapted to engage the triangular portions of the end wall portions 3 and to partially fold inwardly the end and side wail portions 3, 4, a pair of spaced pressure rods 36 to further fold inwardly the end and side wall portions 3, 4 so that the free ends 6 of the side wall portions are in overlapping engagement, and a pressure bar 38 provided to engage the overlapping side wall portions along a previously applied line of adhesive. A reaction plate (25) Fig. 5 (not shown) may be provided to co-act with the pressure bar 38. The end closure apparatus may be incorporated in an installation for setting up, filling and closing cartons. <IMAGE>
Patent GB-2007166-A (GB)
Title: Vehicle Roof Panel Assembly
IPC: B60J7/11
Filed: 1978-10-18
Abstract: Transversely spaced openings 14 and 16 are formed at opposite sides of the vehicle body centre by cutting away a complete transverse section of the vehicle roof and subsequently attaching the upright arms 204 and 206 of a generally H-shaped frame to forward and rearward portions of the roof defining the cut-away section. A pair of panel members are detachably supportable at opposite sides of the vehicle body centre to close the openings. This construction retains the strength of the original body, and the portions of the frame form drainage troughs and support sealing members which engage the detachable panels when in their closed position so as to maintain these panels in weather tight relationship with the vehicle roof. <IMAGE>
Patent GB-2033517-A (GB)
Title: Adjustable length telescopic sleeves
IPC: E03B9/08
Filed: 1978-11-03
Abstract: A sleeve 7 is described which is particularly useful as an adjustable length shaft for placing over an underground stop cock 2 as provided outside dwellings to enable the domestic water supply 1 to be turned off. The adjustable length tube consists of two sleeves one 9 telescoped inside the other 8. One 8 bears one or more pins 15 and the other 9 has one or more axially extending slots 16 in which the pin(s) 15 engage. In order to hold the sleeve 7 at a selected value, a number of blind slots 17 run from the sides of the axial slot(s) 16 and by twisting one sleeve relative to another the pin(s) 15 may be caused to engage in such a transverse slot(s) 16. <IMAGE>
Patent GB-2034584-A (GB)
Title: Production of sterile solutions
IPC: A61K9/08
Filed: 1978-11-22
Abstract: Apparatus for producing sterile pyrogen-free aqueous solutions for medical use comprises a reverse osmosis unit for producing pyrogen-free water, means for mixing the pyrogen-free water with a fluid concentrate, de- aeration means for removing air from the mixture and sterilisation means for sterilising the mixture.
Patent GB-2022102-A (GB)
Title: Supported olefin polymerization catalyst and use thereof
IPC: C08F4/60
Filed: 1979-04-02
Abstract: A supported olefin polymerization catalyst which is active in the presence of an alkyl aluminium cocatalyst, is produced by reacting together an alkyl aluminum halide, a dialkyl magnesium compound, and a reducible titanium compound of the formula Ti(OR)nX4-n, where R is an alkyl group, X is a halogen atom, and n is an integer of from 1 to 4, in the presence of a particulate organic polymer to form a reaction product supported on the polymer particles, the amounts of the reactants being such that the amount of reaction product obtained is less than 30% of the total weight of the reaction product and the polymer particles, and drying the supported reaction product by heating at an elevated temperature which is below the softening temperature of the organic polymer. This catalyst is useful in conventional polymerization or copolymerization of 1-olefins.
Patent GB-2049066-A (GB)
Title: Apparatus for generating energy
IPC: F03D3/04
Filed: 1979-05-09
Abstract: In a wind generator, a stack of shaped pates 5 is arranged around the rotor 3 which has blades 41 of aerofoil section, and the plates 5 define tapering apertures 7 which reliably lead the wind from any direction onto the rotor blades 41 and cause unidirectional rotation of the rotor 3. <IMAGE>
Patent GB-2025742-A (GB)
Title: Potato Planting Machine
IPC: A01C9/04
Filed: 1979-05-24
Abstract: A potato planting machine has vertically conveying scoops 1 arranged on revolving planting belts 2, and a supply bin 11, the bottom of which is formed by a conveyor belt 14 reaching into a scooping space 7, which delivers the potatoes to the planting belts and the drive of which is operatively connected with the drive of the planting belts. The layer of potatoes taken up by the conveyor belt is conveyed on to a rigid slide path 17 following upon the conveyor belt and which guides the potatoes to the scoops. A press key 19 in the unloaded condition forms part of the slide path and has such a large key surface that the loading of the press key is always effected by several. potatoes in the layer of potatoes. The press key is pressed downwards when a specific force exerted by the load of potatoes is exceeded and thereby influences a device, which regulates the conveying performance of the conveyor belt and thus controls the rate of delivery of potatoes to the scooping space 7. <IMAGE>
Patent GB-2052417-A (GB)
Title: Conveyor belt cleaning equipment
IPC: B65G45/12
Filed: 1979-06-22
Abstract: Equipment for cleaning a conveyor belt (1) comprises a plurality of scraper blade units mounted in series along a resilient cylindrical component (14) supported by a rigid elongate trough (15), each scraper blade unit having a scraper blade (7) for contacting the belt surface to be cleared, supported by an inclined arm (8) from a saddle member (13) slidably engaging the side walls of the trough for vertical movement relatively to the trough under the action of the resilient component. <IMAGE>
Patent GB-2028841-A (GB)
Title: Method of producing composite material
IPC: B27N3/00
Filed: 1979-08-28
Abstract: A composite material in the form of a board, block or the like is produced by mixing together particles of resinous particulate material such as wood chips, chopped branches, tree bark, leaves and pine needles or peat and chopped rubber, with a thermosetting resin and thereafter hot pressing the mix to set the composite. The resinous material may be scrap wood particles from sawmills and it would normally require drying to a moisture content of around 7% by weight. The product is a strong composite with good machinability and other physical properties.
Patent GB-2033548-A (GB)
Title: Valves
IPC: F16K5/02
Filed: 1979-10-01
Abstract: A single or multiple three-way valve or cock for filling vessels with samples in a sealed space, the actuation of which may be effected from outside the space, comprises a sealed rotary transmission (1) extending through a wall (3) of the space (4) for operating a switching valve member (2). The valve member (2) is accommodated in a valve housing (5) which is secured to a holder (6), at a point separate from the rotary transmission, to the wall (3) of the space (4) and a simple slot connection or coupling is provided between the rotary transmission (1) and the valve member (2). <IMAGE>
Patent GB-2033665-A (GB)
Title: Vacuum interrupter or spark gap envelope
IPC: H01H33/66
Filed: 1979-10-08
Abstract: An envelope for a vacuum interrupter or spark gap comprises a plurality of aligned adjoining tubular sections, at least one of which is of conducting material and lies between two insulating sections. The conducting section has a central region of a diameter equal to that of the envelope, and has end regions of a reduced diameter, which lie within the respective adjoining insulating sections and which form vapour shields within the envelope. By employing extrusion or the like to form the conducting section, it may be formed as one integral piece.
Patent GB-2034388-A (GB)
Title: Storage tanks
IPC: B65D90/02
Filed: 1979-10-17
Abstract: A liquid storage tank has side walls comprising vertically corrugated steel plates (12) lined internally with concrete (15) contributing structural strength. The concrete layer (15) has a planar internal surface so interconnected columns are formed in the internal corrugations. A reinforcement mesh (24) is incorporated in an intermediate layer (23) containing aggregate between inner and outer layers of cement screed. <IMAGE>
Patent GB-2043268-A (GB)
Title: Analogue indicator
IPC: G01R17/02
Filed: 1979-10-18
Abstract: An analogue indicator having high linearity and accuracy over a wide range comprises a moving coil meter 1 (Figures 1 and 2) having a pointer 2 movable over a scale 3. The meter 1 is movable as a whole relative to the scale 3 by a servomechanism including motor 4 and position feedback potentiometer 6. The meter 1 indicates the difference between position signal 9 and a measured variable 8 and when this difference is large a hysteresis circuit 11 allows movement of the meter in the appropriate direction. The motor 4 may be driven by discharging pulses into the motor from a capacitor 12. A set point indicator may be mounted adjacent pointer 2 and connected to a potentiometer matching potentiometer 6 for controlling a process and indicating the difference between the measured variable and the set point. <IMAGE>